Solar MD SS4074-01 User manual
Solar MD (PTY) ltd.
Unit 23, Alternator Park
Montague Gardens 7441
Cape Town, South Africa
INSTALLATION MANUAL
SS4074-01
Advanced Lithium-Ion battery
24V / 48V
Unit 23, Alternator Park
Montague Gardens 7441
Cape Town, South Africa
Introduction 2
Product Description 2
Product Specifications 3
Errors or Inaccuracies 3
Copyrights 3
Safety Information 3
⚠ Warnings ⚠ Cautions 3
Specification 4
Mechanical installation batteries 5
Installing bottom cover plate 6
Electrical installation 7
Switching the Battery ON 9
Multicolor multipurpose button 10
Button function 10
Button indication 11
BMS Warnings and Errors 12
CANBUS connection 16
CANBUS warnings 17
Troubleshooting 18
Maximum charging / discharging voltages for non supported
devices 19
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Unit 23, Alternator Park
Montague Gardens 7441
Cape Town, South Africa
Introduction
This manual is intended to provide assistance for the installation and commissioning of
the Solar MD Lithium Ion phosphate (LiFePO4) energy storage solutions.
Product Description
The SS4074-01 battery solution is available in one standard size and can be paralleled
to meet most residential applications. The rated voltage is 51.2V nominal (to suit 48V
systems) or 25.6V nominal (to suit 24V systems).
WARNING: Read the entire document before installing or using the Solar MD battery.
Failure to comply with the instructions or warnings in this document could result in
electrical shock or serious injury that can result in death or damage to the product that
can render the SS4074-01 Solar MD battery inoperable.
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Unit 23, Alternator Park
Montague Gardens 7441
Cape Town, South Africa
Product Specifications
All SS4074-01 specifications & descriptions contained in this document are verified to be
accurate at the time of printing. Solar MD reserves the right to make any product
Revisions & improvements at any time.
Errors or Inaccuracies
To communicate any inaccuracies, omissions or to provide general feedback regarding
this manual, please send an email to [email protected]
Copyrights
All information in this document is subject to the copyright of Solar MD (Pty) Ltd. Additional
information is available upon request.
Safety Information
This manual contains important instructions and warnings that must be followed when using
SS4074-01.
Read all the instructions before installing and using the SS4074-01.
⚠ Warnings ⚠ Cautions
● Use SS4074-01 only as instructed.
● For communication and other information please read the BMS manual.
● Do not attempt to disassemble, repair, modify, or tamper with this battery unit.
● Do not insert foreign objects into any part of the battery unit.
● Avoid exposure to any moisture.
● Do not expose to extreme temperatures.
● Do not drill any holes into the box.
● Use only an approved Solar MD installer to install this product.
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Unit 23, Alternator Park
Montague Gardens 7441
Cape Town, South Africa
Specification
Battery Chemistry
Lithium Iron
Phosphate (LiFePO4)
Scalability
Yes
Battery Module
SS4074-01
Communication
CANBUS 500kbps/CAN 2.0B
Rated battery capacity
7373 Wh
Can BUS termination
Single 120 Ohm
System voltage
24V / 48V
Canbus id range:
256 - 499
Rated Voltage
25.6V / 51.2V
Protection method
Cell level: uv / ov / oc
Position: x / y / x
Acceleration: x / y / z
Temperature: ot / ut
Operating Voltage
22.4V-27.8VDC / 44.8V-55.6VDC
Protection phy
Mechanical relay N/O
Output power
2500W / 5000W
Com (CANBUS ) isolation
Yes 1.5kV
Rated current
100A
Indicator
Led, programmable
C Rating
0.35C / 0.69C
Addition IO
3 GPO
Usable battery energy
@ 0.3 °C
7.37 kWh
Cell balancing
Passive balancing
Weight
72 Kg
Counters
Cycle counters
Communication
CANBUS
AUX power output
5V 1A max
Dimensions (mm): h/w/d
620 / 605 / 200
Storage duration
6 months @+25℃
Battery cycle life [+25 ‘C]
> 4000
Safety standards
compliance
IEC 62619/UN 38.3/UL1642
Charging efficiency
99%
Cell Certification
TUV / CE / RCM / UL1642
Operating temperature
-5℃ ~+50℃
Transport Certification
UN3480 & UN38.3
Recommended
Temperature
0℃ - 30℃
Warranty
Limited 10 year
4
Unit 23, Alternator Park
Montague Gardens 7441
Cape Town, South Africa
Mechanical installation
Figure 1: Rear Battery Bracket
Use the correct mounting screws for the correct wall surface. Screw heads should not be
larger than 16mm in diameter. The Battery is only to be installed in the upright position
with a maximum tilt angle of 30 degrees.
Figure 2: Maximum tilt angle
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Unit 23, Alternator Park
Montague Gardens 7441
Cape Town, South Africa
Installing bottom cover plate
Figure 3: Bottom cover installation for single or dual cable exit points
The Battery comes with two covers for single or dual cable exit points. Use the 1 or 2
way out cover plate and fix it with the two M5x6 bolts provided in the box.
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Unit 23, Alternator Park
Montague Gardens 7441
Cape Town, South Africa
Electrical installation
Step 1. Before connecting anything be sure that the battery ON/OFF switch is in the OFF
position. (fig 4 pos 3)
Figure 4: BMS board component locations
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Unit 23, Alternator Park
Montague Gardens 7441
Cape Town, South Africa
Connecting Inverters/chargers/UPS to the battery unit while it is ON can cause big
sparks due to capacitors inside the connected device. This could cause serious injuries.
Use the appropriately sized cable for connected devices, calculated based on the rated
current of the battery and inverter as well as cable length and environmental
conditions.
Figure 5 connection terminals
Step 2. Connect the negative cable to the battery negative busbar and positive cable to
the battery positive busbar as shown in figure 5.
All used connection points should be a suitably tightened, ensuring good electrical
connection between the lug and busbar. A bad connection could cause serious damage
to the battery and inverter, and could void the warranty.
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Unit 23, Alternator Park
Montague Gardens 7441
Cape Town, South Africa
CANBUS connection.
Bms EM used CAN 2.0B @ 500 kbps. Connecting other devices operating at a different speed rate is
not allowed. For connection, please use twisted pair wires in a shielded cable to minimize RF
emissions.
The output of the BmsEm CAN transceiver is galvanically isolated.
Figure 6: BMS-EM connection to the CANBUS.
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Unit 23, Alternator Park
Montague Gardens 7441
Cape Town, South Africa
Commissioning
Step 1. Ensure all DC cables are tightened according to specifications.
Step 2. If the battery operates in parallel with other Energy sources, make sure that the
difference between battery voltage and DC bus is not more than 2.5V. If greater than
2.5V please Charge or Discharge the other source accordingly until voltage difference is
in safe ranges under 2.5V.
Caution! A bad connection can cause very high equalization current
which can burn the fuses of the battery!
Caution! Measure the voltage of the battery before connecting the dc
Cables.
Step 3. Switch the BMS board ON/OFF switch to the ON position (figure 4 pos 3).
Step 4. Connect Multi-purpose button if not connected to the BMS board connector
(figure 4 pos 5).
Step 5. Press and hold the multi-purpose button until the LED’s light up.
If the BMS lights up but the battery contactor doesn't close within 7 seconds go to
seconds, go to the Warnings and Errors section of this manual.
NOTE: If commissioning two or more batteries.
Once the system is switched on and load is added, measure current flow on
each battery. Ensuring that the load is distributed across each battery
equally.
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Unit 23, Alternator Park
Montague Gardens 7441
Cape Town, South Africa
Multicolor multipurpose button
Figure 7 : Multicolor / Multipurpose button
.
Button functions
The new Solar MD Multipurpose button has an extended functionality in combination with the
BMS-EM v10.01. The Multipurpose Button can be used to directly execute 6 predefined
functions and a shutdown instruction. In combination with the 6 Indication LEDs on BMS-EM
v10.01, the user can choose between each function by holding the button until the LED count
matches the number of the function. By releasing the button while moving through the functions,
the LEDs will start blinking and wait for the user to press the button again within 3 seconds.
The predefined functions are:
1. Reserved
2. Change indication LED function between: Show Capacity, Show Current, and Off
3. Reserved
4. Wake up if Sleep mode is active
5. Activate Override Off state for 60sec
6. Activate Override On state for 60sec
If the button is held continuously after function 6, shutdown mode is activated and the battery will
send a signal to switch off in 4sec.
Further holding the button causes the BMS to delay complete shutdown for a maximum of 3
minutes. This operation is used when the technician wants to continue to read or write
parameters after shutdown.
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Unit 23, Alternator Park
Montague Gardens 7441
Cape Town, South Africa
Button indication
The Multipurpose button advanced indication functionality, allows the user to choose between 5
different states. Mixed combinations are also allowed when a combination of multiple batteries
with BMS-EM v10.01 are used. The User can change the preferred stage under Battery Settings
in the mypower24 Energy Portal. (http://login.mypower24.co.za)
Illumination off
When this state has been selected, the button serves as an on/off switch without illumination.
(Fixed color)
Color based on capacity
When this state has been selected, the button shows static illumination in a color based on the
state of charge. From RED at 0% SoC (State of Charge) to GREEN at 100% state of charge.
Color based on capacity with current direction based on shading
When this state has been selected, the button illuminates in a color based on the state of charge
and flashing code based on the electrical current direction (charge / discharge). From RED at
0% SoC (State of Charge) to GREEN at 100% state of charge. The flashing code for charge
goes through illumination interruption for 1 interval and slow illumination into the color based on
the SoC for 5 intervals. The flashing code for discharge represents the opposite from charge -
study color for 1 interval and slow loss of color following illumination interruption. Solar MD users
refer to both as charging / discharging waves.
Fixed color with current direction based on shading
When this state has been selected, the button illuminates in a color based on the user choice and
flashing code based on the electrical current direction (charge / discharge). The flashing code for
charge goes through illumination interruption for 1 interval and slow illumination for 5 intervals.
The flashing code for discharge represents the opposite from charge - study color for 1 interval
and slow loss of color following illumination interruption. Solar MD users refer to both as charging
/ discharging waves.
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Unit 23, Alternator Park
Montague Gardens 7441
Cape Town, South Africa
BMS Warnings and Errors
Method of displaying general warnings and errors:
Figure 8 : Display general warnings and errors, Main stat LEDs and Indication LEDs.
The board uses 2 main LEDs for displaying warnings and Errors. If an Error is present, the
ERROR LED (fig. 8 top right) will start blinking synchronized with the LEDs at the Indication led
group (fig. 8 bottom). If Warning is present the WARN LED (fig. 8 top middle ) will start blinking
synchronized with Some LEDs at the Indication led group (fig. 8 bottom). Reading Indication
LEDs will show you the exact error or warning. Errors are always shown with priority regardless
of warnings. This means that the board will show you only the error on the Indication LEDs if both
Errors and Warnings are present.
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Unit 23, Alternator Park
Montague Gardens 7441
Cape Town, South Africa
Warning codes.
Figure 9. Indication LEDs: (1,2,3) orange left and (4,5,6) green right. In combination with Orange Stat LED (WARNING)
◼ + ◻◻◻◻◻◼ - Battery cell voltage is too low. [1]
◼ + ◻◻◻◻◼◻ - Battery cell voltage is too high. [2]
◼ + ◻◻◻◻◼◼ - Battery charging current is higher than the maximum allowed
charging current. [3]
◼ + ◻◻◻◼◻◻ - Battery discharging current is higher than the maximum allowed
electrical discharging current. [4]
◼ + ◻◻◻◼◻◼ - Override ON active, protection is forced to work at extreme levels for
preset period. [5]
◼ + ◻◻◻◼◼◻ - Override OFF active, protection is forced to switched off the main
protection relay for preset period. [6]
◼ + ◻◼◼◼◻◼ - Pending awake LOW state indicate that battery is forced to switch
On for predefined amount of time, normally 1min waiting for charger to
start charging. [29]
◼ + ◻◼◼◼◼◻ - Pending awake HIGH state indicates that the battery is forced to switch
Off while waiting for all voltages to drop within safe margins. [30]
Additional configurations are used for internal diagnostics.
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Unit 23, Alternator Park
Montague Gardens 7441
Cape Town, South Africa
Error codes.
Figure 10. Indication LEDs: (1,2,3) orange left and (4,5,6) green right. In combination with Red Stat LED (ERROR)
◼ + ◻◻◻◼◻◼ - Battery position X axis is out of range. [5]
◼ + ◻◻◻◼◼◻ - Battery position Y axis is out of range. [6]
◼ + ◻◻◻◼◼◼ - Battery position Z axis is out of range. [7]
◼ + ◻◻◼◼◻◻ - Battery Protection in critical stage, pending shutdown in 3sec. [12]
◼ + ◻◻◼◼◻◼ - Battery Protection in critical stage, Override mode reached the
maximum permitted values, pending shutdown in 3sec. [13]
◼ + ◻◻◼◼◼◻ - Battery Protection in critical stage, Normal mode reached the
maximum permitted values, pending shutdown in 3sec. [14]
◼ + ◻◻◼◼◼◼ - Battery Protection in critical stage, pending shutdown in 3sec. [15]
◼ + ◻◼◻◻◻◻ - Remote Shutdown instruction received, pending shutdown in 3sec. [16]
◼ + ◻◼◻◻◻◼ - User Shutdown instruction received, pending shutdown in 3sec. [17]
◼ + ◻◼◻◻◼◻ - Discharging current is too high. [18]
◼ + ◻◼◻◻◼◼ - Charging current is too high. [19]
◼ + ◻◼◻◼◻◼ - Incorrect cell count detected. [21]
◼ + ◻◼◻◼◼◻ - Cell voltage too low. [22]
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Unit 23, Alternator Park
Montague Gardens 7441
Cape Town, South Africa
Error codes continued.
Figure 11 Indication LEDs: (1,2,3) orange left and (4,5,6) green right. In combination with Red Stat LED (ERROR)
◼ + ◻◼◻◼◼◼ - Cell voltage too high. [23]
◼ + ◻◼◼◻◻◻ - Internal error. Additional information on request. [24]
◼ + ◻◼◼◻◻◼ - Internal error. Additional information on request. [25]
◼ + ◻◼◼◻◼◻ - Internal error. Additional information on request. [26]
◼ + ◻◼◼◻◼◼ - Internal error. Additional information on request. [27]
◼ + ◻◼◼◼◻◻ - Internal error. Additional information on request. [28]
◼ + ◻◼◼◼◻◼ - Internal error. Additional information on request. [29]
◼ + ◻◼◼◼◼◻ - Internal error. Additional information on request. [30]
◼ + ◻◼◼◼◼◼ - Internal error. Additional information on request. [31]
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Unit 23, Alternator Park
Montague Gardens 7441
Cape Town, South Africa
CANBUS Warnings.
Figure 12 CANBUS Termination resistor and Warning LED location
The Orange LED (WARN) is used to display warnings for canbus only. Reading this warning is
possible with pulse counting.
- CANBUS line open or no termination resistor set. [1]
......
- CAN BUS line in the initialization stage. Canbus init occurs when the line was opened and then
established. Minimum period for initialization is 30sec. In this period all nodes in the network are
scanned for ID and serial number collisions. [2]
- Duplicate CAN ID detected with no “auto ID” set. [3]
- Duplicate Serial number detected. [4]
- CANBUS Internal fault. [5]
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Unit 23, Alternator Park
Montague Gardens 7441
Cape Town, South Africa
Troubleshooting Warnings / Errors
Code
Cause
Solution
Warnings ( Figure 9)
1-2
1. Inverter / rectifier settings may not be correct.
2. Battery cells may be disbalanced
1. Check the battery settings
2. Contact Solar MD support
3-4
System design is not correct.
Add additional battery, decrease charging /
discharging current from
your inverter / rectifier / load
5-6
Manual override
Manual override has been activated - please
check with your installer
29-30
The BMS is ready to switch on after deep discharge / charge
Connect charger / load to the Battery
Errors (Figure 10 & 11)
5,6,7
The battery is not installed in upright position
Install the battery in the right position
15,16,17
The BMS has been shut down manually or remotely
Switch on the BMS
18,19
The absolute maximum charge / discharge current has been
achieved
The BMS will restart automatically, please
contact support team or approved installer
21
The BMS is set for different number cells in series as the actually
installed
Contact your installer or Solar MD support team
22
Battery cell voltage way too low.
Fill in the failure report and send to
The unit needs to return to the factory for testing
23
Battery cell voltage way too high
The BMS will restart automatically after pending
awake condition
24,25,26,
27,28,30,
31
BMS Internal failure
Fill in the failure report and send to
The BMS will be dispatched to you for
replacement
29
Battery factory failure
Fill in the failure report and send to
The unit needs to return to the factory for testing
CANBUS Warning (Figure 12)
1
1. Canbus line open.
2. Single CANBUS resistor not terminated.
1.Check if the minimum of two nodes are
connected on the line with the same
transmission speed.
2.Check if a single resistor is terminated via the
jumper. Located top left of CAN LED’s (Fig 12).
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Unit 23, Alternator Park
Montague Gardens 7441
Cape Town, South Africa
Maximum charging / discharging voltages setpoint for devices without
communication
24V System
48V System
Bulk charge (Max charge
voltage)
27.3V
54.6V
Float charge (Voltage
setpoint at 100%)
26.9V
53.8V
Low battery cut-off
24V
48V
Check that the Equalisation functions are disabled, then verify if there is a voltage difference
on the inverter display and the battery terminals @0.3C discharge / charge current. If so
adjust the values above.
Please check if your inverter charger has been approved by Solar MD and it is CAN
compatible.
For the latest Solar MD installation documents go to:
solarmd.co.za
To secure the full 10-year product warranty for the end user, be
sure to register your battery online – login.mypower24.co.za.
19
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